American Cliff Swallow building nest with mud covered beak under a city bridge in Calgary, Alberta, Canada (Petrochelidon pyrrhonota)
This nest is part of a colony built underneath a bridge.
Size: 2760px × 2208px
Location: Weaselhead Flats, Calgary, Alberta, Canada
Photo credit: © Rosanne Tackaberry / Alamy / Afripics
License: Licensed
Model Released: No
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